Buggy code:
public abstract class BaseTestCase extends TestCase { protected static final String ERRORSTACKTRACEFILE = "error-stacktrace.out" ; protected static final String DEFAULT_DB_DIR = "system" ; protected static final String DERBY_LOG = "derby.log" ; private BaseTestCase ( ) { } public BaseTestCase ( String name ) { } public void runBare ( ) throws Throwable { } public final TestConfiguration getTestConfiguration ( ) { } public final File getFailureFolder ( ) { } public static void alarm ( final String text ) { } public static void println ( final String text ) { } public static void traceit ( final String text ) { } public static void printStackTrace ( Throwable t ) { } private static final PrintStream out = System . out ; protected static void setSystemProperty ( final String name , final String value ) { } protected static void removeSystemProperty ( final String name ) { } protected static String getSystemProperty ( final String name ) { } protected static String [ ] getFilesWith ( final File dir , String prefix ) { } protected static URL getTestResource ( final String name ) { } protected static InputStream openTestResource ( final URL url ) throws PrivilegedActionException { } public static void assertSecurityManager ( ) { } public static void assertEquals ( InputStream is1 , InputStream is2 ) throws IOException { } public static void assertEquals ( Reader r1 , Reader r2 ) throws IOException { } public static void assertThrowableEquals ( Throwable t1 , Throwable t2 ) { } public static void assertEquals ( final File file1 , final File file2 ) { } public static void assertExecJavaCmdAsExpected ( String [ ] expectedString , String [ ] cmd , int expectedExitValue ) throws IOException , InterruptedException { Process pr = BaseTestCase . execJavaCmd ( cmd ) ; String output = BaseTestCase . readProcessOutput ( pr ) ; int exitValue = pr . exitValue ( ) ; Assert . assertEquals ( ( ( ( ( ( ( ( ( "expectedExitValue:" + expectedExitValue ) + "<seq2seq4repair_space>does<seq2seq4repair_space>not<seq2seq4repair_space>match<seq2seq4repair_space>exitValue:" ) + exitValue ) + "\n" ) + "expected<seq2seq4repair_space>output:" ) + expectedString ) + "<seq2seq4repair_space>actual<seq2seq4repair_space>output:" ) + output ) , expectedExitValue , exitValue ) ; if ( expectedString != null ) { for ( int i = 0 ; i < ( expectedString . length ) ; i ++ ) { <START_BUG> assertTrue ( ( ( ( "Could<seq2seq4repair_space>not<seq2seq4repair_space>find<seq2seq4repair_space>expectedString:" + expectedString ) + "<seq2seq4repair_space>in<seq2seq4repair_space>output:" ) + output ) , ( ( output . indexOf ( expectedString [ i ] ) ) >= 0 ) ) ; <END_BUG> } } } public static Process execJavaCmd ( String [ ] cmd ) throws IOException { } public static final String getJavaExecutableName ( ) { } public static final boolean isJ9Platform ( ) { } public static final boolean isSunJVM ( ) { } public static final boolean isPlatform ( String osName ) { } public static final boolean isJava5 ( ) { } public static final boolean hasInterruptibleIO ( ) { } public static final boolean isIBMJVM ( ) { } public static String readProcessOutput ( Process pr ) throws InterruptedException { } public static void removeDirectory ( String path ) { } public static void removeDirectory ( File dir ) { } public static void removeFiles ( String [ ] list ) { } public static void fail ( String msg , Throwable t ) throws AssertionFailedError { } }

Fix:
assertTrue ( ( ( ( "Could<seq2seq4repair_space>not<seq2seq4repair_space>find<seq2seq4repair_space>expectedString:" + ( expectedString [ i ] ) ) + "<seq2seq4repair_space>in<seq2seq4repair_space>output:" ) + output ) , ( ( output . indexOf ( expectedString [ i ] ) ) >= 0 ) ) ;